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Other Investments - Summary of Gains Recognized Upon Increase in Fair Value on Other Investments (Parenthetical) (Detail) |  | 12 Months Ended
--- | --- | ---
Mar. 16, 2017 CAD ($) | Dec. 31, 2018 CAD ($) shares | Dec. 31, 2017 CAD ($) shares
Other Investments [line items] |  |  |
Proceeds from sale of shares |  | $ 967,000 | $ 10,879,000
Cash payment for shares purchased |  |  | 1,016,000
Share price |  | $ 9.37 | $ 3.66
Canopy Growth Corporation [member] |  |  |
Other Investments [line items] |  |  |
Shares sold | shares |  | 18,436 | 7,374
Proceeds from sale of shares |  | $ 687,000 | $ 88,000
Evergreen Medicinal Supply Inc. [member] |  |  |
Other Investments [line items] |  |  |
Cash payment for shares purchased | $ 100,000 |  |
Option exercised for the acquisition of equity | $ 500,000 |  |
Option exercised to acquire additional equity percentage | 5.00% |  |
Total additional investment subscribed but not received | $ 600,000 |  |
AbCann Global Corp. [member] |  |  |
Other Investments [line items] |  |  |
Shares sold | shares |  | 182,927 |
Proceeds from sale of shares |  | $ 280,000 |
Warrant exercised | shares |  | 182,927 | 3,658,537
Cash paid to exercise warrants |  | $ 113,000 | $ 2,268,000
Assumptions used to calculate fair value of warrants,risk free rate |  |  | 1.66%
Assumptions used to calculate fair value of warrants,volatility |  |  | 65.00%
Share price |  |  | $ 1.53
Assumptions used to calculate fair value of warrants,expected life |  |  | 9 months 3 days
Assumptions used to calculate fair value of warrants,dividend yield |  |  | 0.00%
Panda Capital Inc [member] |  |  |
Other Investments [line items] |  |  |
Shares sold | shares |  |  | 8,770,001
Proceeds from sale of shares |  |  | $ 9,859,000
Cash payment for shares purchased |  |  | $ 1,016,000
The Hydropothecary Corporation [member] |  |  |
Other Investments [line items] |  |  |
Shares sold | shares |  |  | 550,002
Proceeds from sale of shares |  |  | $ 932,000
Stockholders' equity, stock split, conversion ratio |  |  | 6

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